23
2.2. Raster appears, but no picture
Check if the unit button
and remote control are
active?
Check if all channels
have no signal?
Replace
main board
Enter factory-menu,
initialize EEPROM,
then turn off the TV,
turn on again, check if
picture appears?
Adjust main board
again
Which channel has
no signal ?
Replace
main board
Check if TP1 on the
TV board has 1VPP
signal or noise?
Check if output
IF signal of
TUN1 (pin 11) is
normal?
Check TUN1 and
its periphery
Check N3 and its
periphery
no
yes
yes
VGA/YPBPR/SCART/HDMI
TV
yes
no
no
no
yes
Check if the OSD menu
can be displayed
normally after pressing
MENU.
yes
no
yes
no
Check if TP1 on the
TV board has 1VPP
signal or noise?
Summary of Contents for LC-19HU56S
Page 1: ...LCD TELEVISION LC 19HU56S...
Page 11: ...9 6 Select the document then the window will appear as shown below Select...
Page 18: ...16 2 TDA7266SA The TDA7266SA is a dual bridge amplifier...
Page 20: ...18...
Page 27: ...Main Board Schematic diagrams Page 1 total 8 pages 25...
Page 28: ...Main Board Schematic diagrams Page 2 total 8 pages 26...
Page 29: ...Main Board Schematic diagrams Page 3 total 8 pages 27...
Page 30: ...Main Board Schematic diagrams Page 4 total 8 pages 28...
Page 31: ...Tuner Board Schematic diagrams Page 5 total 8 pages 29...
Page 32: ...IR Key Board Schematic diagrams Page 6 total 8 pages 30...
Page 33: ...Power Board Schematic diagrams Page 7 total 8 pages 31...
Page 34: ...Back light Board Schematic diagrams Page 8 total 8 pages 32...
Page 36: ...APPENDIX B Exploded view LC 19X56 34...
Page 38: ...9219HU5610 Ver 1 0...
